Question

Ширина прямоугольника 7 см. Это составляет 35% его длины. Найдите периметр и площадь прямоугольника?

Answer 1

Периметр =7+7+3+3=20см
площадь=7*3=21см

Answer 2

Given Information:

The width of the rectangle is 7 cm, which is 35% of its length.

Calculating the Length:

To find the length of the rectangle, we can use the fact that the width is 35% of the length. Let's assume the length of the rectangle is L.

According to the given information, the width is 7 cm, which is 35% of the length: 7 cm = 0.35 * L

To find the value of L, we can divide both sides of the equation by 0.35: L = 7 cm / 0.35 L = 20 cm

Therefore, the length of the rectangle is 20 cm.

Calculating the Perimeter:

The perimeter of a rectangle is given by the formula: P = 2 * (length + width).

Substituting the values we have: P = 2 * (20 cm + 7 cm) P = 2 * 27 cm P = 54 cm

Therefore, the perimeter of the rectangle is 54 cm.

Calculating the Area:

The area of a rectangle is given by the formula: A = length * width.

Substituting the values we have: A = 20 cm * 7 cm A = 140 cm^2

Therefore, the area of the rectangle is 140 cm^2.

To summarize: - Perimeter of the rectangle: 54 cm - Area of the rectangle: 140 cm^2